heart rate reserve


Also found in: Acronyms.

heart rate re·serve

(hahrt rāt rē-zĕrv')
Difference between resting heart rate and heart rate during maximal exercise.
See also: Karvonen method
Synonym(s): heart rate range.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
The relationship between heart rate reserve and oxygen uptake reserve in heart failure patients on optimized and non-optimized beta-blocker therapy.
Parameter Mean [+ or -] SD HR (beats*[min.sup.-1]) 142.5 [+ or -] 11.3 %HRR 63.4 [+ or -] 13.9 %VO2R 48.8 [+ or -] 14.2 METs 5.77 [+ or -] 1.2 kcal*[min.sup.-1] 7.4 [+ or -] 2.1 kcal*[session.sup.-1] 222.0 [+ or -] 74.3 HR = Heart Rate, %HRR = Percentage Heart Rate Reserve, kcal = Kilocalories, METs = Metabolic Equivalents, %V[O.sub.2]R = Percentage Oxygen Uptake Reserve Table 3.
3--Subtract resting heart rate from maximum heart rate (heart rate reserve) & 60% & 80% of resting heart rate; add to two numbers to obtain the limitation of heart goal.
The relationship between oxygen uptake reserve and heart rate reserve is affected by intensity and duration during aerobic exercise at constant work rate.
The optimal exercise intensity for improving cardiovascular fitness in persons with spinal cord injuries still needs to established, however, based on research to date, a range of 50 to 80% of the heart rate reserve (HRR) has been recommended, with the higher training intensities (70--80% HRR) showing greater improvements in cardiovascular function (Wharburton et al 2012).
Highest heart rate = resting heart rate + 80% x heart rate reserve; for example, 130 x 80% + 70 = 174.
While resting heart or mean heart rate in 24-hour ECG indirectly reflects sympathetic activation, the difference between maximal HR and minimal HR during electrocardiogram (ECG) monitoring in 24 hours reflects chronotropic ability, also known as heart rate reserve on treadmill exercise testing [7].
A 20-minute incremental submaximal running test was performed to determine the treadmill velocity and gradient to be employed in the main trials that corresponded to 70% heart rate reserve (20).
Moderate-intensity aerobic exercise is defined as exercise between 40% and 59% of aerobic capacity reserve that is comparable to 40% to 59% of heart rate reserve (HRR) and vigorous-intensity exercise is considered to be at a training heart rate above 60% HRR (equivalent to > 60% aerobic capacity reserve).
HR mean indicates a variety of resting HR, is a predictor of mortality in CHF, and HR max-HR min reflects a kind of heart rate reserve which is known as the difference of HR baseline and HR max on treadmill exercise testing and shows a chronotropic insufficiency (11).
Shulman, professor of neurology at the University of Maryland, Baltimore, and her associates enrolled 67 Parkinson's patients who had trouble walking into one of three groups: high-intensity treadmill (30 minutes at 70%-80% heart rate reserve); low-intensity treadmill (50 minutes at 40%-50% heart rate reserve); or stretching and resistance exercises (two sets of 10 repetitions of leg presses, extensions, and curls performed on exercise machines).